Most AI apps are a text box in front of someone else's server: your
notes, your writing, your feelings. Uploaded, processed, retained. We
build the other kind. Each app below runs a compatible model directly on
the device, either Apple’s foundation model where available or an
optional local model on supported hardware. Privacy here is not only a
policy promise: there is no Studio AM AI server holding the content.
How we build them is documented in
the engineering write-up.
Second Brain
Private memory: capture text or voice, search transcripts, and get cited answers from your own notes.
- Capture by typing, dictating, recording a voice memo, or sharing text from another app
- Voice memos remain on the device and become searchable through on-device transcription
- Notes are split on-device into small tagged ideas ("atoms") so recall can be precise
- Ask in plain language; answers cite the exact notes they came from
- Optional private iCloud note sync is off by default; Studio AM cannot read it
Built for: People who capture a lot and retrieve too little: researchers, founders, journalers, anyone who has typed "I know I wrote this down somewhere."
Download on the App Store
Details →
Better Writing
A private writing coach for iPhone and iPad that rewrites, drafts from your notes, and explains corrections.
- Rewrite for Correctness, Simpler wording, Formal tone, Friendly tone, or Concision, with exact word-level changes
- Draft from supplied notes, prepare a reply from a screenshot you confirm, or ask questions about saved writing
- Use Apple’s on-device model where available or a compatible downloaded model; editing works offline after setup
- Share text, links, or images into the app; use widgets and five App Shortcuts without a Studio AM account
- Optional private iCloud sync, user-directed exports, and an explicit web-search handoff are documented network paths
Built for: Professionals and ESL writers polishing sensitive text: work email, essays, reviews, applications.
Download on the App Store
Details →
Pocket Lingo
A voice translator and hand-verified travel phrasebook that works with zero connection.
- Speak or type and hear the translation aloud; run two-way conversations
- Point the camera at a menu or sign to translate it in place
- A dietary profile flags allergens when reading menus
- Curated phrasebook with emergency phrases and local etiquette notes, useful even with the AI idle
Built for: Travelers. Connectivity is worst exactly when you need translation most: planes, metros, basements, rural areas, roaming limits.
Download on the App Store
Details →
Daily Vibe
A private mood journal and voice diary with AI that reflects instead of collects.
- Keep multiple journals; type, dictate without retained audio, or save a spoken entry locally
- Get gentle on-device reflections grounded in what you wrote
- Trends chart your patterns over weeks; you can ask questions about your own trends in plain language
- Entries stay local by default; optional private iCloud sync is off by default, and recordings never sync
Built for: Anyone building a mood or gratitude habit who is not comfortable putting their inner life in a cloud database.
Download on the App Store
Details →
Chatter
Private English conversation and roleplay practice with natural-phrasing feedback from an on-device partner.
- Speak or type in free-form conversation, four everyday situations, or five workplace roleplays
- See a more natural version, the exact changed words, and a short explanation after a learner turn
- Review pace, filler words, answer-length trends, and a focused recap from spoken practice
- Use Say It Again to match the improved wording (it does not score pronunciation or accents)
- Read, search, export, and delete saved conversations after access ends; new AI work stays locked
Built for: A2–B1 English learners who need private speaking practice for everyday situations and work, without a tutor schedule or cloud AI conversation.
Download on the App Store
Details →
The line at a glance
| App | What it does | Where the AI runs | Core AI offline | Account | Price |
| Second Brain | Private AI notes and voice memos | On-device (compatible local model) | Yes, after setup | None | 3-day free trial · $4.99/mo or $29.99/yr |
| Better Writing | Private English rewriting & coaching | On-device (compatible local model) | Yes, after setup | None | Eligible 3-day trial · Monthly or yearly Pro |
| Pocket Lingo | Offline voice, photo and menu translation | On-device (compatible local model) | Yes, after setup | None | Monthly or yearly subscription · current local price in the App Store |
| Daily Vibe | Private mood journal & voice diary | On-device (compatible local model) | Yes, after setup | None | Eligible 3-day trial · $4.99/mo or $29.99/yr |
| Chatter | Private AI English speaking practice | On-device (compatible local model) | Yes, after setup | None | Monthly or Annual · current local App Store price |
Also running on-device AI
The apps above are built around on-device AI. These use it for
one job inside a wider app. The same rule applies to both: the AI
runs on your device, and there is no Studio AM account.
Common questions
- Do these apps send my data to a server?
- The AI processing in these apps runs on-device rather than on a Studio AM server. None requires a Studio AM account. Some apps may use Apple services for purchases or optional private sync; others may need a compatible model or voice download. Each app’s privacy page lists its exact network behavior.
- What AI model do they use?
- The active model depends on the app and device. Supported Apple Intelligence devices can use Apple’s on-device foundation model; some apps also offer a compatible local-model download on other supported hardware. Pocket Lingo’s enhanced model expands its language coverage. The product page and in-app setup show the exact path available on a particular device.
- Do they work offline?
- Their core AI works offline after compatible model setup. A model download, App Store purchase, optional private iCloud sync, or an external link or web search still requires a connection. The product privacy page identifies each network path.
- Do I need an account?
- No. None of these apps has a Studio AM sign-up, login, or profile. Their privacy pages explain local storage, downloads, and any optional Apple service, such as private iCloud sync.
- What do they cost?
- Plans vary by app and can change. The App Store shows the current local price and trial eligibility before purchase; each product page below explains what remains available after a subscription ends. None is priced per AI message.
- What device do I need?
- Each app requires iOS or iPadOS 26 or later and checks model compatibility during setup. Apple Intelligence may work immediately where available; another supported device may be offered a local-model download. Check the individual product page for platform support and the app itself for the exact path on your hardware.
